Labour MP Harry Harpham has died after a short fight with cancer aged 61.
He was elected as the MP for Sheffield Brightside and Hillsborough in May after serving in local politics in Sheffield for many years.
A former miner in Nottinghamshire, he had previously been deputy leader of Sheffield City Council.
He was on the Environment, Food and Rural Affairs Select Committee and was a parliamentary aide to shadow energy secretary Lisa Nandy.
Mr Harpham was elected after former home secretary David Blunkett announced his intention to stand down at the 2015 election. He won the seat with a majority of 13,807.
Labour Party leader Jeremy Corbyn paid tribute to Mr Harpham, describing him as "a proud socialist" who was "dedicated to justice for working people".
In a statement, Mr Corbyn added: "Despite the undoubted hardship that his support for the miners' strike would have caused him, as it did many thousands of miners, Harry recently told me he would have done it all again.
"To the very end he was fighting for working people in parliament. What a decent man he was and he will be sadly missed by all his friends in the Labour Party."
Deputy Labour leader Tom Watson tweeted: "Deeply upset to learn of Harry Harpham's death. Sheffield has lost a wonderful MP. My thoughts are with his family."
Mr Harpham's final contribution in the House of Commons came on 20 January at Prime Minister's Questions.
Addressing the issue of job losses at Sheffield Forgemasters, he accused the government of "warm words, hand-wringing and some crocodile tears" over a "tsunami of losses in the steel industry".
Mr Harpham leaves behind his wife Gill and children Annie, Kieron, Dan, Emily and Victoria.
